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USGS Daily Statistics for Illinois

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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 05594450 SILVER CREEK NEAR TROY, IL


Madison County, Illinois
Hydrologic Unit Code 07140204
Latitude  38°42'59", Longitude  89°49'45" NAD83
Drainage area 154  square miles
Gage datum 438.56 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1966-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 171 294 131 290 387 169 62 71 21 12 73 133
2 142 322 107 221 317 141 128 36 33 11 63 134
3 127 261 117 216 227 142 122 26 38 15 56 137
4 154 225 205 275 203 125 134 35 37 27 45 212
5 253 184 284 267 237 111 134 54 28 35 33 177
6 251 154 254 222 192 89 109 65 27 36 30 139
7 133 187 266 178 177 84 125 50 16 27 37 134
8 84 217 264 150 249 83 106 37 20 26 30 133
9 62 138 197 139 247 92 83 45 32 41 32 120
10 78 116 170 160 202 102 96 43 34 51 56 108
11 160 118 166 264 170 92 191 28 48 48 81 128
12 186 157 194 430 171 116 169 39 45 49 78 217
13 155 140 186 290 225 127 109 71 38 41 61 158
14 163 136 197 278 248 114 59 87 53 44 68 150
15 145 131 220 304 171 114 35 82 92 54 97 185
16 122 102 201 295 196 141 39 72 79 44 88 177
17 108 108 150 208 313 139 43 60 63 31 77 133
18 131 137 184 205 279 135 38 59 48 26 109 118
19 182 138 256 269 230 142 56 51 31 20 150 83
20 204 141 331 258 159 155 82 43 18 25 158 66
21 177 182 317 258 122 160 68 38 13 53 112 81
22 168 291 243 232 111 139 59 26 14 49 74 148
23 163 392 180 210 108 150 61 23 38 46 59 134
24 169 350 159 251 91 188 43 42 58 50 67 148
25 184 257 227 290 90 177 27 52 53 59 115 240
26 162 218 247 223 145 171 34 42 40 53 149 184
27 137 207 232 198 261 140 57 46 39 43 167 298
28 152 181 257 199 275 116 98 38 30 32 186 307
29 169 42 292 364 241 94 106 38 25 34 180 242
30 206   317 470 164 59 144 31 13 48 133 189
31 230   328   131   112 28   77   211